CHEMICAL REACTION ENGINEERING QUIZ

The heat of reaction

Depends on both pressure and mechanism of reaction

Depends on the pressure only

Is independent of the mechanism of reaction

Depends on the mechanism of reaction only

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The irreversible reaction, X → Y, is the special case of the reversible reaction, X ⇋ Y, in which the

All of these

Equilibrium constant is infinite

Fractional conversion of

Concentration of

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In a/an __________ vessel, the fluid enters and leaves following plug flow.

Open-closed

Open

Closed

Close-opened

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In a zero order reaction, reactants concentration does not change with time and the

Reaction rate is trebled when the initial concentration is trebled

Time for completion of the reaction is independent of the initial concentration

Time for half change is half the time taken for completion of the reaction

Time for half change is independent of the initial concentration

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In the fluid catalytic cracker (FCC), the cracking reaction is (i) and the regeneration is __ (ii)

(i) exothermic (ii) exothermic

(i) endothermic (ii) enodthermic

(i) endothermic (ii) exothermic

(i) exothermic (ii) endothermic

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In flow reactors, the performance equations interrelate the rate of reaction to the

Reactor volume

All of these

Feed rate

Extent of reaction

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Half life period of a chemical reaction is

The time required to reduce the concentration of the reacting substance to half its initial value

Half of the residence time of a reaction

None of these

Half of the space time of a reaction

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The 'E' curve for a non-ideal reactor defines the fraction of fluid having age between t and t + dt

At the outlet

In the reactor

Averaged over the inlet and outlet

At the inlet

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Which of the following is not a theory of homogeneous reaction?

Radiation hypothesis

None of these

Chain reaction theory

Collision theory and activated complex theory

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For the same residence time, which one will give the maximum conversion?

Two stirred tank (each of 2.5 litres) in series

Single stirred tank (v = 5 litres)

Single tubular flow reactor (v = 5 litres)

Stirred tank followed by tubular flow reactor (each of 2.5 litres)

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